Thermodynamics help with entropy

Is it possible for an adiabatic liquid-vapor separator to separate wet steam at 100 psia, 90 % quality into a saturated liquid stream and a saturated vapor stream both at a pressure greater than 100 psia?

Ans: (no according to the increase in entropy principle)

I need to prove this

3. The attempt at a solution

I tried proving by using a t s diagram, but I could make any sense of it